Portable compressor unit



' w. PARSONS. PORTABLE COMPRESSOR UNIT.

APPLICATION FILED MAR- 3l| I92]- Patent'ed May 9, 1922.

i /q v I INVENTOR UNITED STATES- "PATENT OFFIC'E;

FREDERICK w. PARSONS, or ELMIRA, NEW YORK, .AssreNoR T meERsoIm-Rmn COMPANY, or JERSEY CITY, NEW JERSEY, A coRroRA'rIoN or NEW JER'sEY.

roRrnBLEooM REssoR em. f

Specification of Letters Patent.

Application filed March 31, 1921. Serial No. 457,383.

To all whom it may ooncerm I Be it known that,I, F EDERICK W. 'PAR- sons, a citizen of-the United States, and a resident of Elmira, county of Chemung,

I so,

State of New York, have invented a certain Portable Compressor Unit, of which the following is a specification accompanied by drawings.

This invention relates to portable compressor units, including a vvertical compressor and an engine for driving the same, preferably in the form of a-combustion engine.

In such a self contained portable unit, the

compressor, its driving means, and a receiver, are mounted on a suitable frame having wheels or skids for instance, and the obj ects of the present invention are to lighten,

simplify and' che'apen the construction,

lower the center of gravity of a vertical compressor unit as much as practically possible, without detracting from portability, produce a compact and rigid structure with as few parts as possible, and enable the ele-.

ments forming the unit to bereadily assembled in the shop, and disassembled in the field if necessary, and also permit any part to be quickly removed where and when desired.

Further objects of the invention will hereinafter appear and the invention is shown in its preferred form in the accompanied drawings in which Figure 1 is a side elevation, partly in longitudinal'section, of 'a portable compressor unit embodying the invention;

Figure 2 is a transverse sectional. elevation on the line 22 of Figure 1 looking in the' direction of the arrows with the radiator and fan drive removed;

Figure 3 is an enlarged transverse sectional elevation on the line 3-3 of Figure 1 looking in the direction of the arrows and taken through. the receivers andengine frame, and I Figure 4 is a detail longitudinal broken sectional view through the back head of a receiver tank on the line 44 of Figure 3 looking in the direction of the arrows.

In the drawing, the principal elements of the unit are illustrated in sufficient detail to enable the invention to be understood, those details however, which form no part of the invention have been omit ted for simplicity and the drawings have been made-as nearly diagrammatic as posslble.

Patented May 9, 1922.

the duplex receiver, and in this instance for illustrative purposes a vertical compressor cylinder H and two combustion engine cylinders J and K are shown mounted on the crank case G, substantially in accordance with the construction forming the subject matter of the co-pending application of Earl W. Taylor, deceased, Serial No. 487,326, filed July 25, 1921. As in the application" referred to,'the combustion engine cylinders J and K, preferably of the four cycle type, are' located at each side of the compressor cylinder H and a common crank shaft L, op} eratingin suitable crank shaft bearings U in the crank case G is provided for the three cylinders. A cam P on a counter-shaft Q is indicated for operating the valves of one of the combustion engine cylinders but the details of the valve mechanism are omitted for simplicity.

The unit is shown provided with the usual radiator R at the front of the machine mounted on a box or casing T. A belt U running over the pulleys V and W adapted to be suitably driven from the engine crank shaft is provided fordriving the radiator I fan. A starting motor X or other suitable discharged through the discharge pipe a to the duplex receiver,-the twotanks F andE of which are in communication through the pipe (Z at the back of the machine. Air un-- der pressure is supplied to the point of work from the supply pipe 6 controlled by the hand valve f. y

In order to conveniently and securely fasten the receivers E and t6 the axles C and D but in such manner that the parts may be readily assembled or disassembled, I have provided saddles g on the front axle and suitably connected theretoon which the 1 front ends of the main body portions of the receivers are adapted to rest. Straps h are suitably clamped to the saddles g as by means of the bolts j. Each receiver is provided with a front head 77 and a back head suitably and removably secured thereto as by means of screw threads for instance indi-.

cated in Figure a. The back heads 0- are provided with bases 1) having feet Q adapted to be secured to the rear axle D as by means v of the U-bolts 1 having the nuts 8.

The crank case'G is provided with the outwardly extending hind feet t adapted to be secured tothe back "heads 0 as by means of the bolts a and nuts '2). As shown the apertures in the hind feet t through which the securing bolts a pass are slightly larger than the diameter of the bolts, affording clearance for purposes of adjustment in aligning the parts. The crank case G is also provided with the fore feet w adapted to be adjustably connected to the main body portions of the receivers E and F as by means of the studs a", screw threaded into the receiver shells and provided with the adjusting nuts y. l

The fluid connection 01 in the form of a pipe between the receiver tanks, is connected to the two back heads 0, and in addition to afiording communication between the tanks,

- forms an additional transverse brace or strut for stifiening purposes. The crank case Gr lies between the receivers E and F and partially below the level of the tops of the receivers, which lowers the center of gravity and increases the stability of the machine.

The entire construction of the portable compressor unit is such that the parts may be readily assembled and disassembled. Different parts may be removed for inspection, repair or adjustment without disturbing the remaining-parts and the manner in plurality of longitudinally extending receivers in communication with each other and having body portions and front and back heads, the back heads being connected together by transverse end connections, an engine frame in the form of a crank case ex tending longitudinally of the receivers and supported upon the back heads and body portions of the said receivers and lying partially between and below the level of the tops of the receivers, and a vertical engine driven compressor mounted on said crank case.

3. A portable compressor unit, comprising a main" supporting frame consisting of a plurality of longitudinally extending receivers having body portions and removable front and back heads, the back heads being in communication with each other and being connected together by transverse end connections, an engine frame in the form of a crank case extending longitudinally of the receivers, and supported rearwardly upon the said back heads and adjustably supported at its forward end upon'the body portions of the receivers, the said crank case lying between and partially below the tops of the receivers, and a vertical engine driven compressor mounted on said crank case.

4'. A portable compressor unit comprising a main supporting frame'consisting of longitudinal side elements or reaches in the form of cylindrical receivers having body portions and removable front and back heads, and,

transverse end elements adapted to form axles connectlng the said recelver heads at front ,and back, a fluid connection between the said back heads affording communication between the said receivers, an engine frame in the form of a crank case extending longitudinally of the receivers and provided with outwardly extending feet at the front and rear ends, the hind feet being supported on the receiver back heads, and the front feet being adjustably supported upon the main body portions of the receiver, the body of the crank case lying between and partially below the tops of the receivers, and a vertical engine driven compressor mounted on said crank case.

lln testimony whereof l have signed this specification.

rannniuck w. PARSONS. 

